1 Description

The iW600 is a secondary-side voltage position controller to detect the voltage undershoot. It can be used in Dialog’s

primary-side control systems to achieve ultra-low no-load power consumption and fast dynamic load response. The iW600

operates in “Normally-OFF” mode with negligible power consumption during power supply normal steady state operation,

while monitoring dynamic load change through the voltage on the secondary rectifier. A wake-up signal is transferred

through the flyback power transformer to the primary side when a dynamic load change is detected. The iW600 eliminates

loop compensation components and the optocoupler on the secondary side to minimize the bill of material cost.

2 Features

■ Fast system output voltage detection

■ Transmits detection signal to the primary side through flyback transformer

■ Two-electrical-terminal connection simplifies system PCB layout

■ No external components

■ Enables <10mW no-load power consumption in typical 5V-output systems

■ Available in 3-lead SOT-23 and 2-lead DFN packages